Which one of the following statements regarding helium is i…

Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) Noble Gases Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

Which one of the following statements regarding helium is incorrect

It is used to produce and sustain powerful superconducting magnets

It is used as a cryogenic agent for carrying out experiments at low temperatures

It is used to fill gas balloons instead of hydrogen because it is lighter and non-inflammable

It is used in gas-cooled nuclear reactors

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The correct answer is:

Helium is twice as heavy as hydrogen, its lifting power is 92% of that of hydrogen. Helium has the lowest melting and boiling point of any element which makes liquid helium an ideal coolant for many extremely low temperature application such as super conducting magnet and cryogenic research where temperature close to absolute zero are needed.

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